PT-2019-5273 · Ultravnc · Ultravnc

Published 2019-03-01 · Updated 2020-10-22 · CVE-2019-8274

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions UltraVNC revision 1211

Description The issue is related to a heap buffer overflow in the VNC server code, specifically within the file transfer offer handler. This can potentially result in code execution and appears to be exploitable via network connectivity.

Recommendations For UltraVNC revision 1211, update to revision 1212 to resolve the issue.

Fix

Buffer Overflow

Memory Corruption

Heap Based Buffer Overflow

Weakness Enumeration

CWE-119

CWE-787

CWE-122

Related Identifiers

BDU:2020-02170

CVE-2019-8274

Affected Products

Ultravnc

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2019-8274 · Security Note
• https://osv.dev/vulnerability/CVE-2019-8274 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-02170 · Security Note
• https://us-cert.gov/ics/advisories/icsa-20-161-06 · Note
• https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2019-225-05-TelevisGO_Security_Notification.pdf&p_Doc_Ref=SEVD-2019-225-05 · Note
• https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2019-225-05-TelevisGO_Security_Notification.pdf&p_Doc_Ref=SEVD-2019-225-05 · Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf · Note
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-021-ultravnc-heap-based-buffer-overflow · Note